Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 10 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/19/2023   09:29:10   (   0.00,-104.71) (   0.79,-108.33)  413.15                80
 10/20/2023   09:08:05   (  -0.00,-104.70) (  -0.21,-103.87)   95.21                80
 10/22/2023   21:12:04   (   0.00,-104.65) (  -0.04,-104.79)   15.81                80
 10/23/2023   20:56:18   (   0.00,-104.64) (   0.98,-100.32)  492.83                80
 10/25/2023   09:18:35   (  -0.00,-104.67) (   0.23,-105.68)  115.24                80
 10/26/2023   08:57:30   (  -0.00,-104.67) (  -0.79,-101.22)  393.50                80
 10/27/2023   21:19:54   (   0.00,-104.63) (  -0.44,-106.61)  225.33                80
 10/28/2023   21:04:09   (  -0.00,-104.63) (   0.58,-102.14)  283.71                80
 10/30/2023   09:26:25   (   0.01,-104.66) (   0.67,-107.49)  323.71                80
 10/31/2023   09:05:20   (   0.02,-104.65) (  -0.35,-103.03)  185.23                80